This open access volume collects emerging issues in Environmental and Civil Engineering, originating from outstanding doctoral dissertations discussed at Politecnico di Milano in 2021. The advanced innovative insights provided are presented with reference to the relevant sustainable development goals (SDGs), hoping that scientists, technicians and decision makers will find them as a valid support to face future sustainability challenges. Indeed, the fast evolution of our society often falls short in properly taking into consideration its relationship with the environment, which is not only the primary source of any resource and the sink of all the wastes we generate throughout our activities, but also the cause of most of the loading and constraints applied to structures and infrastructures. The lack of a proper consideration of the relationship between the needs of both the society and the environment may lead to strong disequilibria, generating a large amount of threats for arobust, resilient and continuous development. In this perspective, the SDGs set by the United Nations represent the criteria to revise our development model, towards the ability to conjugate different needs to build a safe relation between anthropic activities and the environment. Civil and Environmental Engineering plays a relevant role in providing methods, approaches, risk and impact assessments, as well as technologies, to fulfil the SDGs. Research in these fields may in fact provide technical knowledge and tools to support decision makers and technicians in: (i) planning mitigation and adaptation actions to climate change, extreme weather, earthquakes, drought, flooding and other natural disasters; (ii) designing efficient and sustainable strategies for resources exploitation, minimizing the impact and the unequal distributions; (iii) increasing the safety of structures and infrastructures under exceptional loadings and against the deterioration due to their lifecycle; (iv) adopting a holistic risk management approach and appropriate technologies to reduce pollution and environment deterioration, which increase vulnerability; (v) providing a safe drinking water and sanitation system to protect human health.

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Autorentext
Manuela Antonelli is professor at Politecnico di Milano, Department of Civil and Environmental Engineering, Italy. Her research activity is mostly addressed to the evaluation of physical-chemical finishing post-treatments alternatives, even based on the use of nanomaterials, for drinking water production and wastewater aiming at reclamation and reuse for irrigation or in the industrial field. These activities are performed in cooperation with private companies and international research groups, collaborating in projects focused on process optimization and rationalization of water usage for a sustainable management of water resources.Gabriele Della Vecchia is professor at Politecnico di Milano, Department of Civil and Environmental Engineering, Italy. His research activity is mostly addressed to the theoretical and numerical modelling of chemo-hydromechanical processes in geomaterials, including clays, cement-bentonite mixtures and brittle rocks.